Ignition apparatus for internal-combustion engines.



G. V. AHARA.

IGNITION APPARATUS FOR INTERNAL COMBUSTION ENGINES. KPPLIUATIOH ILnDJmuzs, 1913.

1, 1 04,860. Patented July 28, 1914,

N 'B9 Q I MAM/)4&6

,STATES PArinazi? OFFICE.

Gnomz; v. ARABA, or TORONTO, oN'rAnIo, CANADA, AssIGNoR rro FAIRBANKS,

MORSE@ COMIANY, or CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

'IGNIIJIN APPARATUS FOB INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented J uly 28, 1914.

'Application filed Innes, 1913. serial No. 771,815.

- tm-,a concern:

itf known .t at I, GEORGE V. AIIARA,

retarding the spark.

'afcitizepoff the United States of America, and 'resident of the city ofToronto,.county of .York, Province of Ontariofin .the D minof'Canada,ha'veinvented a. `certa n new Y'and useful' ImprovementA in IgnitionApparatus for" internal-Combustion Engines,

.of which thef following is a specification.

.The inventionconsists in the novel convstruction and arrangement ofparts, where- `bythe..magneto -is operated from the fuel puinp.operating 'mechanism and "said mechanism.- is'so arranged that thespark' may be advnoedor retarded in relation to the movement-ofthe crankshaft.

The objects of the invention are', to simplify the means-foroperatingthe magneto in a :jump spark ignition apparatus as usedoncommercialtypes of stationary internal combustion engines, utilizingpart `of the lordinarymechanism to operate the mag-v l l A-.furtherobject is vto provide-a simple and: easily perated means'for advancingor vI n'the drawings, Figure 1 is a perspective Vresponding parts ineach figure.

r'so

- ten view'of the improved device-shown assemj 15'.' bled andas placedupon an engine. Fig. 2

view .of

isanenlarged vertical longitudinal sectional art of 'the main 4operatingrod e-means for advancing or. retardshowing the magneto. ike numerals ofreference indicate cor- Refer'rmgv lto the drawings 1 to the side faceof the engine lcylinder and the said bracket is formed with an up- 'lwardly rejecting portion havin l zontal s elf 2 extending outwar ytherefrornwhich is adapted to support ,the maga horineto`3. The bracket1 is also formed with a forwardly projecting portion 4 extending fromthe lower side thereof, said forwardlyl ro'ecting portion having adownwardly exp lug portion in which is secureda pivot 6.. l

is a bracket which' is. especially designed to be screwedv journaledupon the pin 6. The arm extends angularly upwardly and forwardly fromthe journal portion 8 and terminates in a vertical portion 9 at theouter end. The rocker arm 7 is formed substantially U-shape in crosssection the hollow side being turned toward the bracket 1 10 is alongitudinal -slot formed in the front side of the upper portion 9 ofthe arm 7. Y

11. is a handle rigidly secured in the upper end of the arm 7 andextending horizontally outward therefrom. y

12 is a lug projecting laterally 'from one side of the upright portion 9of the arm 7 having a pin-hole 13 therein.

14 are a pair of lugs formed integral with the lower journal portion 8ofthe arm 7 and extending laterally therefrom in approximately rightangular relation to the said arm.

15 is the en 'ne cam shaft which is suitably support inits bearing inthe engine frame and suitably operated.

16 is a pin rigidly secured in and extending laterally from the cam 17secured on the end of the cam shaft 15, said pin bearing arranged offcenter from the cam shaft and adapted to rotate around the centerthereof.

18 is a lrod having a journal bear-in 19 secured on one end thereof andencirc ing the pin 16 and rotatably held thereon.

20 is a-sleeve member adapted vto slide on the forward end of the rod 18and having the forward end 21 rotatably supported on the pin 22 securedin the hole 13 in the lug 12 of the rocker arm. f

23 is a 'nut secured on the outer end of the pin 22 holding the sleeve20 in place.

24 is a longitudinal rectangularjshaped recess formed in the under lsideof the outer end portion of the sleeve 20 and communicatin withthe endof the cylindrical bore 25 o the sleeve 18. The top of the recess iscovered in by an arched hood 26 forming part with the sleeve.

27 is a pin journaledin the sides of the lend portion 21 of the sleevemember 20 and 40 fits extremity bevele fon-both -sidesgkthebeveled end,of thear extendinv `a c'rcss*-then llrecess *221 lia-ving'v secured" tiereto Within the slot, the eccentric v Cain nneniljor QS, said pin alsohaying a suitable handle or` finger'A fgripf2'9 the i 'outer end. Thecam Q8 is formed-Of a disk' of metal secured eetmntiical-ly 1113011thepin 27' and a portion 3G at one sidet-hereof is flate,

4 ljed toabut the terminal end of Athe rod.

18. The'cam'QS'tlinsI-rs a means'for adjusting the distancebotfieenfth'e'centers of the pin v16 and the pin as on the turning oftheeccentric sov that the narrow sides Venl gage iheend lof the rod,` lthepix-11 at'the outer 'end will-- be rnoved;.c loser.ft o i-the endorf-the .rofl-and consequentlyvr closer to the operating" I', 32isaspiral slvr-inglfsecmzedgat one end toY tion ofthe rod when 'it bythebolts 35:-extending1through .the-'slot -10 in said arm. Theup'perxendlofthe block Betis preferably beyeledftogoneside.`

' 36 is an arxn secnredtouthef magneto spin- ,dle and Ahav-ing anangulalygfset.downjvardly' extending-prtio? vformed with hema-adapted tohe engaged bythe be el fvIni the operatie tion of the ca'lnsha mparts arecipro- 'eatingl :motion toathe no landsnch, rod be- 'siringsi the saidrocken farm upon the pin 6, 1 thereby reciprocating tfhejpnnip rodandalso swinging the upper end `of. the :arijn forj- Wardly toengageithe*magneto-farm z 36 and operate'the armature.r The -bloek'flisadpoint close to the'l-iniift 'of .its forn'ard stroke the `beveled'Vend 3T of thearml 36` will slip over thepoint of the; beveled. block;the

' armature l'Jeing-,retnrned toits normal p0siv"tion bythe spfimgf38.1..-As1the arm 7 swings backnardly-in its return movement 4the b ev-A Y. eled end`V of; the block letienga'gesp the opposite 1 side of the.beveled end Srzothe', arm 36 operating'gthe armature of the magneto inthe opposite direction, the end of the arm 256 2S isgivenA a. half turnso that thes'no lforward mm1-ation., oftlierot-lcer arm 7.

p ported ai jaleen'tlto s device, the .notay sultahljv operated trom vasleeye-ineinlier slidably ed in the 'sides 'thesle'ex'egandaidapt ahntthe end of said rod, and n spirnl 'spi th e reto"and at the other endto-.jl

lcv'linder, a -n'agneto rigidly-suppe" sadbrne t.

slippingr over tli'ejvoi' tfy ofi-the bleek-'3i as tho arm rear-lietie'lii'nii"l or return 65 moyexnent. The block 34 nnzy lltadjusted A I"o allow of the proper'A nieremont. of the magneto arm. v e

Instarting theaengine it is desirable to retard the spark and the'operation necessari.'v 7o isery simple. rl`he (ngeratin' gr 'nog the:andle l1 swings the arm T tornanti-ly draw ing against. the-'tension ofthe springl and sliding" the sleeve 20 on the. rod 18: ',lilhen thesleeve is thus moved 'formvlrdly the cam 75 de thereof 'adjaientl o the'end the r'odfandf when iheliandle1l is releasedthespringtl draws the,-sleere lmelcn'ardly, fso that theend ofr the rodengaqes the short.delofjthesaid S0 cam. Themed is thus shortened sothat the wills tl ly lnt S5 he somewhat. l retarded in relatif'mmore-ment of-'tlieca 1n sha ftand conseqn will be. retarded '.n relatlonlto tlieniorenie occur at .alater period. Vvlhen vthe erigin'e.` has fairly started the spark isads-anvcedhy swinging the rocker. arin 7, forwardly and turning theeccentric earn 28 to bring the 90 long,r sido, into engageinenbwit'h therodlS thus advancing; the spark to thedesilfed rnnniner position.v Thisconstruction of a Spa" 1l'ing"inocI1al nisln does not in a ny Wayinterfere hand operation "of the fn'el' pt'nnp' 'for prin'iing purposes'as the rocker arm 7 moves en; trely independent. of the movement 'of therod 41S, whenoperated through the handle 11. Havingthns describedniyinventiorr whatl l Claim as new and desire to seefnre` by Let-.tersatent-isz Y v*1..In an ignition apparatns for. iiiter'iial'.combustion engines, 'rhecombinal'icni with the xnagnetqof a rockerarn'ifpiii'rtf-dly Supl' A"the nia'gi'ht nd adapt? .ed toengage and'operateil'A -nlc -rnenber i engine,` a 'rod connected at one end 1tosai rank xnelz'rrber,V

y I 'zingedon the free end of rod-and pivot-ally eoili'roet to said,rocker arm'siid"slee'member ha arranged iu'saitl slot ano iotatablv'su"ortencircling said` rod' and secured' re. In an`inition apparatus t'z.ternil eoinlmston engines," in Vcombinatwin' n liraeiiet adoptie-d to beseenrecl to theengine fro-in the of ,said ln :n

affini, the' 955 adapted to engage and operate said magneto scribed myname in the presence of two Witrm, a crank member sultably operated fromnesses. the engine, anl adjustabe rod connecting said crank and saidrocker arm, and a pump GEORGE V AHARA' 5' rod connected to a. lateralprojecting lug on Vitnesses:

the lower end of caid rocker arm. J. B. VAREY,

In witness whereof, I have hereunto sub- F. STREET.

